HTML_LABELS

DROP_LABELS

Whether the axis automatically drops labels at regular interval or not to avoid labels overlapping.
This gives better results but require more computations. You can disable it to save computation
time when you know your labels won't overlap.

ENABLE_CACHE

Whether the ticks and labels are cached from one rendering to another. This improves the rendering
performance of successive rendering but penalize the first rendering. For labels it is only working
with GFX labels not HTML ones.

valueOf

Returns the enum constant of this type with the specified name.
The string must match exactly an identifier used to declare an
enum constant in this type. (Extraneous whitespace characters are
not permitted.)